The classification is determined at the time of importation based on the condition of the goods as imported. Wide coil imported at 600 mm or more is classified under the wide-coil heading (67421) even if it will subsequently be slit to narrower widths domestically. The domestic slitting operation does not retroactively change the import classification.

Trade-remedy coverage depends on the specific HTS 10-digit subheading and country of origin. Antidumping and countervailing duty investigations on tin mill products have been conducted against multiple origins. Importers should consult the USITC and CBP ADD/CVD databases for current order scope before sourcing, as narrow strip and wide coil may be covered by the same or different orders.